Extendable and expandable positioning structure of a trunk bag

ABSTRACT

An extendable and expandable positioning structure of a trunk bag comprises a bag body and a movable buckling device at two sides of the bag. The bag body is divided into a bag receiving portion at the middle section thereof. The bag receiving portion has an upper bag at the upper side and a lower bag at the lower side. An inner side of the upper bag is connected to an upper box frame. The lower box frame is connected to a retaining plate and the retaining plate is installed with at least one long groove. The upper bag is connected to the sliding block. The sliding block is installed with a positioning male element at position with respect to the positioning female element so that the positioning male element is capable of being buckled to the positioning female element.

FIELD OF THE INVENTION

[0001] The present invention relates to an extendable and expandablepositioning structure of a trunk bag, and especially to a retainingstructure with a slidable buckling device for expanding the length ofthe box.

BACKGROUND OF THE INVENTION

[0002] In travelling, many clothes are carried and some articles arebought, and thus a small baggage becomes a large baggage. Therefore,many packages are necessary. In a long traveling, this is notconvenient, moreover, as one goes to foreign.

[0003] Referring to FIGS. 12 to 14, a telescopic box is illustrated. Inthat design, middle section 31 of an package 3 is formed, which can beformed as a layer to be hidden. As the package 3 at the middle section31 is unused, it can be hidden in the box. And a zipper can be used tocombine the lower end at the upper half 33 of the package 3 and theupper end of the lower half 34 of the package 3 so as to be formed as acomplete box.

[0004] The inner surface of the box is classified as a soft surface anda hard surface. The soft surface has no inner liner. It is a packagingstructure by the package 3 with the zipper 32. However, some boxrequires a preferred protection for placing objects with weak structure,and thus, the extension of the structure must be enhanced.

[0005] As shown in the figures, two sides of the package 3 each areinstalled with an extending retaining structure 35 having a track 36 atthe lower half of the lateral side. A sliding plate 37 is connected tothe track 36. The sliding plate 37 is moved upwards and downwards at thelateral surface of the track 36. Since the upper end of the slidingplate 37 is fixed to the lower end of the upper half 33 of the package3, and the track 36 is fixed near the upper end of the lower half 34 ofthe package 3. The upper half and lower half of the package 3 is amiddle section 31 which serves to provide space for expanding the box.Since the sliding 37 is hard, a preferred bearing force can be generatedat the lateral surface of the box.

[0006] Since the upper end of the sliding plate 37 is connected to anupper female sticky strip 38 and the lower and of the sliding plate 37is connected to a lower female sticky strip 39. Moreover, since thelower half 31 of the package 3 is extended with a connecting strip 30,and a male sticky strip 301 is connected to the connecting strip 30.When the sliding plate 37 is motionless, as shown in FIG. 13, the malesticky strip 301 will stick to the lower female sticky strip 39 at alower end of the sliding plate 37. When the sliding plate 37 movesupwards to an expansion position, as shown in FIG. 14, the male stickystrip 301 is connected to the upper female sticky strip at the upper endof the sliding block 37.

[0007] The sliding plate 37 can be fixed to the upper frame 331. Thetrack 37 can be fixed to a lower frame 341. The upper frame 331 and thelower frame 341 are connected to the upper half 33 and lower half 34 ofthe package 3. In the prior art structure, by the sticky propertybetween the upper and lower female sticky strips 38 and 39 and thesticky property of the male sticky strip 301, the connecting strip 30 ispositioned with respect to the sliding block 37.

[0008] Therefore, the extending retaining structure 35 can beconveniently adjusted and positioned since the cover of the box must beopened at first, and the objects at two sides of the box must beremoved, then the sticky strips 39 and 301 at the lower side of thesliding plate 37, and then the package 3 is lifted, so that the slidingplate moves upwards. Then, the male sticky strip 301 is adhered to thesticky strips 38 and 301 at the upper position of the sliding block 37so as to be positioned in a new position. Thus, the package 3 may beused in a large volume.

[0009] However, each time the box must be opened, and thus the operationis inconvenient. Furthermore, if after positioning, if the box isextruded, the sliding plate and the track are possible compressed anddeformed so as to lose of affect.

SUMMARY OF THE INVENTION

[0010] Accordingly, the primary object of the present invention is toprovide an extendable and expandable positioning structure of a trunkbag, wherein the volume of the box can be expanded while the cover isunnecessary to be opened. When a heavy pressure is applied on thepresent invention, it will release automatically so that the slidablebuckling device will not be destroyed. Furthermore, the transferring andstacking of a trunk are performed conveniently. Since the bucklingdevice can be adjusted preferably, the space of the box can be adjustedeasily. It is only needed to match the bag receiving portion of the bag,the bag can be adjusted to be thicker or thinner. Since a box frame isadded so that resistance of the box is increased.

[0011] To achieve above objects, the present invention provides aextendable and expandable positioning structure of a trunk bagcomprising a bag body and a movable buckling device at two sides of thebag. The bag body is divided into a bag receiving portion at the middlesection thereof. The bag receiving portion has an upper bag at the upperside thereof and a lower bag at the lower side thereof. An inner side ofthe upper bag is connected to an upper box frame. The lower box frame isconnected to a retaining plate and the retaining plate is installed withat least one long groove. The long groove is installed with at least onepositioning female element. The upper bag is connected to the slidingblock. The sliding block is installed with a positioning male element atposition with respect to the positioning female element so that thepositioning male element is capable to be buckled to the positioningfemale element. The thickness of the sliding block extends out of thelong groove and two outer edges of the sliding block being engaged withthe surface of the retaining plate so that as the bag body is pulledupwards, the sliding block is driven to be moved in the long groove.

[0012] The various objects and advantages of the present invention willbe more readily understood from the following detailed description whenreading in conjunction with the appended drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

[0013]FIG. 1 is a perspective view of the first embodiment in thepresent invention.

[0014]FIG. 2 is an exploded perspective view of the first embodiment inthe present invention.

[0015]FIG. 3 is an assembled right side view of the first embodiment inthe present invention.

[0016]FIG. 4 is a perspective view showing the first embodiment of thepresent invention being connected to a box.

[0017]FIG. 5 is an exploded perspective view of the second embodiment inthe present invention.

[0018]FIG. 6 is an assembled cross sectional view of the thirdembodiment in the present invention.

[0019]FIG. 7 is a perspective view showing the third embodiment in thepresent invention.

[0020]FIG. 8 is an exploded perspective view of the third embodiment inthe present invention.

[0021]FIG. 9 is an assembled cross sectional view of the thirdembodiment in the present invention.

[0022]FIG. 10 is a perspective view of the third embodiment in thepresent invention which is connected to a box.

[0023]FIG. 11 is a perspective view of the third embodiment in thepresent invention in which the box is opened.

[0024]FIG. 12 is a perspective view showing a prior art embodiment inwhich the box is opened.

[0025]FIG. 13 is a front cross sectional view of a prior art designbefore the extension retaining structure is pulled out for using.

[0026]FIG. 14 is a lateral cross sectional view showing that the priorart extension retaining structure has pulled out for using.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Referring to FIGS. 1 to 11, three embodiments of the extendableand expandable positioning structure of a trunk bag are illustrated.

[0028] The first embodiment is illustrated in FIGS. 1 to 4. In the firstembodiment, a slidable buckling device 4 is installed. The bag body 1 isdivided into a bag receiving portion 12 at the middle section thereof.The bag receiving portion 12 has an upper bag 11 at the upper sidethereof and a lower bag 13 at the lower side thereof. The inner side ofthe upper bag 11 is connected to an upper box frame 15. The lower bag 12is also connected to a lower box frame 14. The lower box frame 14 isconnected to a retaining plate 41. The retaining plate 41 is installedwith at least one long groove 42. At least one inner edge of the longgroove 42 is installed with a positioning female element 40. Thepositioning female element 40 is a pair of positioning buckling legs 43.The positioning buckling leg 43 is installed with a buckling groove 431.The two buckling groove 431 of the positioning buckling legs at twosides are protruded outwards and are back to back. The pair of thepositioning buckling legs 43 are installed at the inner edge of the topof the long groove 42.

[0029] The upper box frame 15 is firmly secured to a sliding block 45 ata position with respect to the long groove 42. The sliding block 45 isinstalled with a positioning male element 450 at position with respectto the positioning female element 40 so that the positioning maleelement 450 is capable to be buckled to the positioning female element40. The positioning male element 450 is a protruded buckle 46 protrudedfrom the top of the upper side of the sliding block 43. Since thepositioning buckling leg 43 is installed at the upper end of the inneredge of the long groove 42, the protruded buckle 43 is installed,respectively. At two sides of the protruded buckle 43 like a piece eachare installed with respective protrusion 47. The protrusion 47 may bebuckled to the buckling groove 431. The thickness of the sliding block45 is extended out of the long groove 42 and two outer edges 48 areengaged with the surface of the retaining plate 41. A pair of throughholes 451 are installed at the middle portion of the sliding block 45,and then a pair of respective retainer 49 pass through the through holes451 so that the sliding block 45 is firmly secured to the upper boxframe 15.

[0030] When the bag body 1 is pulled, at the upper bag 11, the upper boxframe 15 and the sliding block 45 are driven to move with respect to thelong groove 42 of the retaining plate 41 to be moved upwards ordownwards so as to be positioned. As shown in FIG. 3, the positioning isat a position illustrated in the condition of FIG. 4 and at position asillustrated from the solid line of the FIG. 3 to the dashed line of FIG.3. It is shown that the protrusions 47 at two sides of the protrudedbuckle 46 protruded from the upper end of the sliding block 45 willenforce the inner end surfaces of a pair of positioning buckling legs 43at the inner edge of the long groove 43 of the retaining plate 41 to beopened so that the protruded buckle 46 slides into the positioningfemale element 40 formed by the two positioning buckling legs 43 andthen the buckling groove 431 of each positioning buckling leg 43 willbuckle the protrusion 45 of the protruded buckle 46. Thus, the retainingpositioning to the sliding block 45 of the positioning male element 450is accomplished. Another, the upper box frame 15 moves to an upperposition from a lower position for combining and positioning.

[0031] As shown in FIGS. 1 to 4, the lower end of the sliding block 45is connected with an inserting rod 452. A spring 453 encloses theinserting rod 452. The upper end of the spring 452 is positioned. A rodgroove is installed with respect to the long groove 42. When the slidingblock 45 moves downwards to be positioned so that the inserting rod 452is inserted into the rod groove 421, while the spring 453 is compressedto be out of the rod groove 421. When the box is to be opened forexpansion, the sliding block 45 will release the zipper at the bagreceiving portion 12.

[0032]FIGS. 5 and 6 shows the second embodiment of the presentinvention, a slidable buckling device 5 is installed. The bag body 1 isdivided into a bag receiving portion 12 at the middle portion thereof.The bag receiving portion 12 at the middle portion has an upper bag 11at the upper side thereof and a lower bag 13 at the lower side thereof.The inner side of the upper bag 11 is connected to an upper box frame15. The lower bag 12 is also connected to a lower box frame 14. Thelower box frame 14 is connected to a retaining plate 51. The retainingplate 5 1 is installed with at least one long groove 52. At least oneinner edge of the long groove 52 is installed with a positioning femaleelement 50. The positioning female element 50 has a positioning bucklinggroove 53 which is installed at the inner edges at two sides of the longgroove 52.

[0033] The upper box frame 15 is firmly secured to a sliding block 55 ata position with respect to the long groove 52. The sliding block 55 isinstalled with a positioning male element 550 at position with respectto the positioning female element 50 so that the positioning maleelement 550 is capable to be buckled to the positioning female element50. The positioning male element 550 is installed with a retaininggroove 552 at the outer lateral side (the lateral side near the bag) onthe sliding block 55. Two lateral sides of the retaining groove 552 areinstalled with respective bead hole 553 so that the retaining groove 552can be placed with a spring 45 conveniently. Beads 57 at two ends of thespring 56 at two ends of the spring 56 protrudes from the bead holes 553of the retaining groove 552 by the elastic force of the spring 56 sothat the exposing portion of the bead 56 is buckled in the positioninggroove 53. When the sliding block 55 moves upwards, the spring 56 willcompress, so that the bead 57 is received in the retaining groove 552 soas to be moved upwards to the positioning groove 53 and then is elasticout for positioning. The inner lateral surface of the sliding block 55have two outer edges 58 which can protrude out of the long groove 52. Atthe outer edges 58 connected to the surface of the retaining plate 51,when the bag body 1 is pulled upwards, the bead 57 of the sliding block55 can be driven to be moved upwards at the positioning groove 53 of thelong groove 52 of the retaining plate 51 so as to be positioned.

[0034] The third embodiment of the present invention is illustrated inFIGS. 7 to 11. In this, Two sides of the bag body 1 are installed withrespective slidable buckling devices 2. The bag body 1 is divided into abag receiving portion 12 at the middle portion thereof. The bagreceiving portion 12 has an upper bag 11 at the upper side thereof and alower bag 13 at the lower side thereof. The inner side of the upper bag11 is connected to an upper box frame 15. The lower bag 12 is alsoconnected to a lower box frame 14. The lower box frame 14 is connectedto a retaining plate 21. The retaining plate 21 is installed with atleast one long groove 22. At least one of the two lateral sides of thelong groove 22 is installed with a positioning female element 20. Thepositioning female element 20 is a positioning buckling groove 23. Thelower end of the retaining plate 21 is connected to the lower box frame14 through at least one retainer 24.

[0035] The upper box frame 15 is firmly secured to a sliding block 25.An elastic buckle 26 of the positioning male element 250 is installed onthe sliding block 25 at a direction with respect to the positioninggroove 23 so that on hook head 27 of the elastic buckle 26 may beengaged to the positioning groove 23, as shown in FIG. 8. The slidingblock 25 cause the elastic buckle 26 to be installed at the middleportion at the left and right sides of the main body. The middle portionhad a groove 261. A protruded buckle 26 at the groove 261 extends fromone side (upper side illustrated in the figure) to another side (lowerside). While the protrusion end of the protruded buckle 26 is not toconnect with the groove at another side. Near the distal end of theprotruded buckle 26 is protruded with a hook head 27. The main body ofthe sliding block 25 projects from the long groove 22. Two outer edges28 are connected to the surface of the retaining plate 21. In practicalassembly, the retaining plate 21 is at first connected to the lower boxframe 14. Then, it is fixed by the retainer 25. Then the sliding block25 protrudes from the long groove to be positioned to the upper boxframe 15 so as to be fixed by the retainer 29.

[0036] In using the present invention, the bag body 1 is pulled upwardsso as to drive the long groove 22 in the sliding block 25 to moveupwards and downwards. Furthermore, the hook head 27 is buckled in thepositioning groove 23. Each sliding block 25 is connected to the upperbox frame 15 through a retainer 29 and is placed near the lower end ofthe upper box frame 15. The retainers 24 and 29 are pins for fixingwhich may be correspondent to each other.

[0037] In the aforesaid structure, FIG. 9 shows the moving condition.That is to say, the positioning grooves 23 at the upper and lower sideshave two positioning positions for before used and after used. However,if the bag body 1 is matched to the groove, the positioning groove 23may be positioning in three positions for adjustment. The bag body 1 isa structure enclosing the surface of the box, which may be made of softcloth or a hard case. If it is a hard case, in order to save material,the upper and lower box frames may not be installed. In order to fix theappearance of the bag body 1, similarly, in the present invention, azipper 16 serves to hidden the bag receiving portion 12 at the middleportion so as to achieve the object of fixing the upper bag and lowerbag. FIGS. 10 and 11 shows the embodying of the present invention, whichshows the combination of the present invention and the bog.

[0038] In summary, in the present invention, a special buckling deviceis used so that the height of the box can be adjusted without openingthe box. The present invention is primary formed by a retaining plateand a sliding block. A positioning male element (protrusion from theprotruded buckle, spring, bead, hook head of the elastic buckle)installed on the sliding block serves to position the positioning femaleelement (buckling groove of the positioning buckling leg, positioninggroove, positioning buckling groove) in the long groove by the guidingof the retaining plate. Through the elasticity of the positioning maleelement, the fixing structure connected to the positioning femaleelement can be adjusted rapidly. If it is pressed heavily, since thepositioning male element is slightly buckled to the positioning femaleelement, even a slightly releasing, no effect will apply to the objectsin the box. That is to say, if the object is too much, the box can stillbe used. Therefore, the present invention has a preferred use andprovides a good variation to the content space.

[0039] Although the present invention has been described with referenceto the preferred embodiments, it will be understood that the inventionis not limited to the details described thereof. Various substitutionsand modifications have been suggested in the foregoing description, andothers will occur to those of ordinary skill in the art. Therefore, allsuch substitutions and modifications are intended to be embraced withinthe scope of the invention as defined in the appended claims.

What is claimed is:
 1. An extendable and expandable positioningstructure of a trunk bag comprising: a bag body being divided into a bagreceiving portion at the middle section thereof; the bag receivingportion having an upper bag at an upper side thereof and a lower bag atthe lower side thereof; an inner side of the upper bag being connectedto an upper box frame; the bag receiving portion being used as anextendable and expandable portion of the bag; and a buckling deviceinstalled at an inner surface of at least one lateral side of the bagbody, the buckling device including a retaining plate and at least onesliding block; the lower box frame being connected to a retaining plate;the retaining plate being installed with at least one long groove; thelong groove being installed with at least one positioning femaleelement; the upper bag being connected to the sliding block; the slidingblock being installed with a positioning male element at position withrespect to the positioning female element so that the positioning maleelement is capable to be buckled to the positioning female element; thethickness of the sliding block being extended out of the long groove andtwo outer edges of the sliding block being engaged with the surface ofthe retaining plate so that as the bag body is pulled, the sliding blockbeing driven to be moved in the long groove, and thus, to position thepositioning male element to move upwards so as to be buckled at anotherpositioning female element.
 2. The extendable and expandable positioningstructure of a trunk bag as claimed in claim 1, wherein an upper boxframe is connected at an inner side of the upper bag of the bag body;and a lower end of the upper box frame positions the sliding block. 3.The extendable and expandable positioning structure of a trunk bag asclaimed in claim 1, wherein a lower box frame is connected within thelower bag of the bag body; an upper end of the lower box frame ispositioned with a positioning plate.
 4. The extendable and expandablepositioning structure of a trunk bag as claimed in claim 1, wherein thepositioning female element is a positioning buckling hole on the longgroove of the retaining plate; the positioning male element is anelastic buckle on the sliding block.
 5. The extendable and expandablepositioning structure of a trunk bag as claimed in claim 4, wherein theelastic buckle of the positioning male element is installed at a middleposition at two lateral surfaces of the sliding block; the middleposition is a groove, a piece shape protruded buckle is installed in thegroove; the protruded buckle extends from above a side of the groove toanother side, but not to be connected with another side; a hook head isprotruded from a distal end of the protruded buckle; and the protrudedbuckle is positioned in the positioning buckling groove through the hookhead.
 6. The extendable and expandable positioning structure of a trunkbag as claimed in claim 4, wherein the positioning buckling grooves inthe long groove of the retaining plate is installed at two lateralsides.
 7. The extendable and expandable positioning structure of a trunkbag as claimed in claim 1, wherein the positioning female element is apositioning buckling groove at the long groove of the retaining plate;the positioning male element is at least one elastic buckling bead onthe sliding block.
 8. The extendable and expandable positioningstructure of a trunk bag as claimed in claim 7, wherein the elastic beadof the positioning male element is installed at a middle portion of thelateral surface of the bag body facing to the bag; at the lateralsurface of the sliding block against the bag is installed with aretaining groove two lateral surface of which each are installed with abead hole; the retaining groove is placed with a spring, thereby, partof each bead is protruded out from the bead hole.
 9. The extendable andexpandable positioning structure of a trunk bag as claimed in claim 8,wherein the positioning buckling groove on the long groove of theretaining plate is installed at an edge of the two sides and is concave.10. The extendable and expandable positioning structure of a trunk bagas claimed in claim 10, wherein the positioning female element is apositioning buckling leg on the long groove of the retaining plate; andthe positioning male element is a protruded buckle on the sliding block.11. The extendable and expandable positioning structure of a trunk bagas claimed in claim 10, wherein the protruded buckle on the positioningmale element is installed at a top of the sliding block, and the top ofthe sliding block has a protruded buckle like a piece; two lateralsurfaces of the protruded buckle like a piece each is installed with aprotrusion.
 12. The extendable and expandable positioning structure of atrunk bag as claimed in claim 11, wherein the positioning buckling legof the positioning female element is installed at a top on an inner edgeof the long groove of the retaining plate; there are a pair ofpositioning buckling legs; each of the positioning buckling leg isinstalled with a buckling groove; and the buckling groove of thepositioning buckling leg serves to buckle the protrusion of theprotruded buckle.
 13. The extendable and expandable positioningstructure of a trunk bag as claimed in claim 1, wherein a lower end ofthe sliding block is connected to an inserting rod; a spring coversaround the inserting rod; an upper end of the spring is positioned; arod groove is installed on the long groove; when the sliding block movesdownwards and positioned, an inserting rod is inserted into the rodgroove; and the spring is compressed out of the rod groove.